1144320438 has 8 divisors (see below), whose sum is σ = 2288640888. Its totient is φ = 381440144.

The previous prime is 1144320409. The next prime is 1144320461. The reversal of 1144320438 is 8340234411.

It is a sphenic number, since it is the product of 3 distinct primes.

1144320438 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95360031 + ... + 95360042.

It is an arithmetic number, because the mean of its divisors is an integer number (286080111).

Almost surely, 2^1144320438 is an apocalyptic number.

1144320438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1144320438 is a wasteful number, since it uses less digits than its factorization.

1144320438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190720078.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 1144320438 is about 33827.8056929503. The cubic root of 1144320438 is about 1045.9619471964.

Adding to 1144320438 its reverse (8340234411), we get a palindrome (9484554849).

The spelling of 1144320438 in words is "one billion, one hundred forty-four million, three hundred twenty thousand, four hundred thirty-eight".